diff --git a/Makefile.am b/Makefile.am
index a9eadaf6..57f589d5 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -10,6 +10,7 @@ UTIL_INCLUDE = \
annotations.hpp \
backtrace.hpp \
bitwise.hpp \
+ colour.hpp \
debug.hpp \
enable_if.hpp \
endian.hpp \
@@ -39,6 +40,7 @@ UTIL_INCLUDE = \
UTIL_FILES = \
bitwise.cpp \
+ colour.cpp \
debug.cpp \
endian.cpp \
except.cpp \
diff --git a/colour.cpp b/colour.cpp
new file mode 100644
index 00000000..db0bf9b4
--- /dev/null
+++ b/colour.cpp
@@ -0,0 +1,55 @@
+/*
+ * This file is part of libgim.
+ *
+ * libgim is free software: you can redistribute it and/or modify it under the
+ * terms of the GNU General Public License as published by the Free Software
+ * Foundation, either version 3 of the License, or (at your option) any later
+ * version.
+ *
+ * libgim is distributed in the hope that it will be useful, but WITHOUT ANY
+ * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+ * FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
+ * details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with libgim. If not, see .
+ *
+ * Copyright 2010 Danny Robson
+ */
+
+#include "colour.hpp"
+#include "range.hpp"
+
+using namespace util;
+
+
+colour::colour (double _red, double _green, double _blue, double _alpha):
+ red (_red),
+ green (_green),
+ blue (_blue),
+ alpha (_alpha)
+{ ; }
+
+
+namespace util {
+ template<>
+ colour
+ random (void) {
+ return colour (range::UNIT.rand (),
+ range::UNIT.rand (),
+ range::UNIT.rand (),
+ range::UNIT.rand ());
+ }
+
+ template <>
+ colour&
+ randomise (colour &c)
+ { return c = random (); }
+}
+
+
+std::ostream&
+operator<< (std::ostream &os, const util::colour &c) {
+ os << "colour(" << c.red << ", " << c.green << ", " << c.blue << ", " << c.alpha << ")";
+ return os;
+}
diff --git a/colour.hpp b/colour.hpp
new file mode 100644
index 00000000..6eb34ba2
--- /dev/null
+++ b/colour.hpp
@@ -0,0 +1,43 @@
+/*
+ * This file is part of libgim.
+ *
+ * libgim is free software: you can redistribute it and/or modify it under the
+ * terms of the GNU General Public License as published by the Free Software
+ * Foundation, either version 3 of the License, or (at your option) any later
+ * version.
+ *
+ * libgim is distributed in the hope that it will be useful, but WITHOUT ANY
+ * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+ * FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
+ * details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with libgim. If not, see .
+ *
+ * Copyright 2010 Danny Robson
+ */
+
+#ifndef __UTIL_COLOUR_HPP
+#define __UTIL_COLOUR_HPP
+
+#include "random.hpp"
+
+#include
+
+namespace util {
+ struct colour {
+ colour (double red, double green, double blue, double alpha = 1.0);
+
+ double red;
+ double green;
+ double blue;
+ double alpha;
+ };
+
+ template <> colour& randomise (colour&);
+ template <> colour& random (void);
+}
+
+std::ostream& operator<< (std::ostream&, const util::colour&);
+
+#endif